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#1 Posted : 01 November 2007 17:04:00(UTC)
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Posted By geecee
Hi, someone who needs glass roof maintenance done has asked me what it entails with regard to health & safety these days. He needs to remove and then replace old glass lights from the roof. There is a long 'valley' to sort out particularly!

I started out with scaffold access and method statements and approved contractors and not working underneath and need for security harnesses with wires running length of the job.

Despite my wide h & s experience I am struggling to identify specifc methods of work to assist with fragile roof and handling of the glass sections. I guess it needs more than crawler boards - maybe even some sort of temporary platform (cannot get a mobile platform into the valley).

Is there new kit out there that makes all of this a lot safer as the job has been put off a few times apparently due to fear of incident while working tens of metres along a glass valley area.

Help appreciated from any budding engineers out there so that I can give him a realistic idea of the way forward!

Regards, GC
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#2 Posted : 02 November 2007 12:06:00(UTC)
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Posted By Mitch
Can the work be carried out from below? Much easier to control.
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#3 Posted : 02 November 2007 13:40:00(UTC)
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Posted By peter gotch
Have a look at HSE guidance book HSG 33.

Possibly a valley platform is part of what you need, together with safe access, and protection for anyone underneath.

Regards, Peter
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#4 Posted : 02 November 2007 17:03:00(UTC)
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Posted By geecee
Cheers - I think working from below would be ideal but apparently it has been ruled out because of the height.

The valley platform sounds OK but not sure how you get it in place!

Thanks.
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#5 Posted : 03 November 2007 11:43:00(UTC)
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Posted By David AB Thomas
The following may help:

www.hse.gov.uk/pubns/ais12.pdf
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#6 Posted : 03 November 2007 12:13:00(UTC)
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Posted By Alan Haynes
......."I think working from below would be ideal but apparently it has been ruled out because of the height."..


The fall is greater if the work from above and fall through
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#7 Posted : 04 November 2007 10:22:00(UTC)
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Posted By geecee
Yes working from below is lower than actually being on the roof but I was told that the structure is very high and using approriate fall and arrest equipemnt outside appeared best option. Apparently most jobs need finishing from the roof anyway for flashings and seals etc.

Problem is ending up with a solution which is cost-prohibitive and makes fixing the roof impossible. Think I might suggest a mobile platform from inside if it is possible to gain access. Then have harness wire installed for finishing off the job and any future maintenance on the roof. Designing another suitable platform to sit in the roof valleys should be reasonable if you get the right contractor I suppose.

I found the glasshouse roof sheet very helpful and will pass this on too.

Cheers
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#8 Posted : 19 November 2007 16:28:00(UTC)
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Posted By Dave Merchant
You may want to look at this:-

http://www.safesite.co.u.../mobile_valley_frame.php

(Safesite has no connection to me but I've used one and personally liked the concept)
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#9 Posted : 19 November 2007 17:09:00(UTC)
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Posted By geecee
Thanks Dave - and all other contributors.

Finding solutions is not straightforward sometimes and at least some good guidance has been provided.

Regards

Geecee
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#10 Posted : 19 November 2007 18:57:00(UTC)
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Posted By Crim
I had some experience of similar work in Liverpool a few years ago. Work required from both inside and above the roof to clean coloured glass.

We had a scaffolder erect a working platform inside, from the public access ground floor, and protected the public by preventing access to that area. The inside work was then carried out on the scaffold timber platform.

The scaffold platform was then left in position to provide a "crash deck" for any unfortunate soul who may have fallen through the glass from above. Crawling boards and steel ropes were used for connecting the operatives in case of a fall, together with tight access controls with sign in and out procedure.

I can't remember the total height but it was very high, scaffolders are well used to erecting such high platforms.

No problems and nothing to report apart from a job well thought out and carried out in the safest manner we could think of at the time.

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